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Chesapeake Bay weather for January 30: sunny & cold with weekend warm-up

Brian's exclusive forecast for Baltimore, Annapolis, and northern Delmarva:

National Weather Service forecast map
National Weather Service forecast map
Map courtesy National Weather Service

This afternoon: Mostly sunny and cold, but not quite as cold as yesterday with a high around 30.

Tonight: Clear and seasonably chilly with a low from 20 to 25.

Friday: Mostly sunny and milder with a high from the upper 30s near the bay shore to the mid 40s inland.

Friday Night: Variable cloudiness with a low in the upper 20s.

Saturday: Mostly sunny and mild with a high from the mid 40s near the bay shore to the lower 50s inland.

The extended outlook calls for clouds and sun on Sunday with a low in the mid 30s and a high in the mid to upper 50s (except upper 40s to lower 50s along the bay shore.) Mostly cloudy on Monday with a chance of mixed precipitation. The low will be in the lower 30s and the high will be in the upper 30s. Mostly cloudy on Tuesday with a low in the lower 30s and a high in the lower 40s. A chance of rain on Wednesday with a low around 35 and a high near 45.

One of the coldest mornings in many years was experienced from Tidewater in Virginia to the Delmarva peninsula with temperatures at many locations below zero (including -6 degrees at Salisbury, Maryland; -6 degrees at Ocean City, Maryland; and -6 degrees at Wakefield, Virginia. Other locations reported temperatures around zero or the single digits. These cold temperatures resulted from high pressure, a clear sky overhead, light winds, and fresh snow that enhanced radiational cooling. As the center of high pressure moves offshore this afternoon and evening, a more southerly flow will result in a rebound of the mercury with afternoon highs closer to the freezing point. The flow of air from the south will become more pronounced on Friday with highs breaking above the 40-degree mark, and on Saturday with highs approaching 50 at some locations a few miles inland from the bay (icy cold waters will hold down shore locations in the 40s). Meanwhile, a cold front will move from west to east across the bay later in the weekend and into early next week. Waves of low pressure are expected to move across the stalled frontal system and produce mixed precipitation on Sunday night into Monday. The long-range calls for milder temperatures with a chance of rain by the middle of next week and then colder, stormier conditions by the following weekend.

On the Maryland portion of Chesapeake Bay, there are no advisories currently in effect. Winds today will come out of the southeast at 10 knots with waves less than one foot. Winds tonight will come out of the southwest at 10 knots with waves less than one foot. Winds on Friday will come out of the south at 10 knots with waves less than one foot. Winds on Friday night will come out of the southeast at 10 knots with waves less than one foot. Winds on Saturday will come out of the southeast at 10 to 15 knots with waves around one foot. Boaters should prepare for icy conditions on the bay. Marine information is provided as general guidance. Boaters should always stay tuned to the latest forecasts and advisories from the National Weather Service.

The average high temperature for January 30 is 42 degrees and the average low is 25 degrees. The records at Baltimore on this date are 72 degrees in 1914 and -4 degrees in 1873. Today's sunrise will occur at 7:15 and the sunset will occur at 5:25. Weather data courtesy of the National Weather Service. For more weather updates, please visit my Chesapeake Bay Weather page on Facebook, and if you're heading to Ocean City feel free to check out my Ocean City MD Weather page on Facebook. You can also follow me on Twitter @chesbayweather.